"use strict" function dcubicHermite(p0, v0, p1, v1, t, f) { var dh00 = 6*t*t-6*t, dh10 = 3*t*t-4*t + 1, dh01 = -6*t*t+6*t, dh11 = 3*t*t-2*t if(p0.length) { if(!f) { f = new Array(p0.length) } for(var i=p0.length-1; i>=0; --i) { f[i] = dh00*p0[i] + dh10*v0[i] + dh01*p1[i] + dh11*v1[i] } return f } return dh00*p0 + dh10*v0 + dh01*p1[i] + dh11*v1 } function cubicHermite(p0, v0, p1, v1, t, f) { var ti = (t-1), t2 = t*t, ti2 = ti*ti, h00 = (1+2*t)*ti2, h10 = t*ti2, h01 = t2*(3-2*t), h11 = t2*ti if(p0.length) { if(!f) { f = new Array(p0.length) } for(var i=p0.length-1; i>=0; --i) { f[i] = h00*p0[i] + h10*v0[i] + h01*p1[i] + h11*v1[i] } return f } return h00*p0 + h10*v0 + h01*p1 + h11*v1 } module.exports = cubicHermite module.exports.derivative = dcubicHermite